Precisely engineered accessories can add even more reliability convenience and flexibility to rinnai tankless water heaters.
Tankless water heater vent pipe.
In the case of tankless we will always build a new vent system.
After applying pipe thread tape to the mnpt nipples on your water heater thread the fnpt end of the water heater connector onto the tank and tighten with.
Direct vent and power vent.
To make venting easiest install your tankless water heater on an outside wall.
Tankless water heaters are vented in two ways.
In fact tankless water heaters save up to 16 square feet of space.
You just need to connect the elbow and straight pipe to tankless water heater exhaust from wall.
With rinnai common venting up to 8 tankless water heater units share the same vent system.
Item 1456951 model 222714npp.
Rinnai 4 pack tankless gas plastic water heater vent kit.
Installing your tankless water heater for easier venting.
Direct vent water heaters can use two separate pipes for intake and exhaust but some manufacturers offer concentric venting a single pipe that contains an inner exhaust vent and an outer intake vent.
Because tankless water heaters require pvc or special stainless steel piping as the vent material which is much more expensive than copper pex or cpvc a short venting run is better for both the heater itself as well as your savings so many homeowners choose to move the location of their heater closer to an outside wall and run water lines.
Concentric vents provide a couple of advantages.
If the unit is installed on a basement wall the vent pipe can be run up just a few feet and then vented out the side with the use of a 90 degree elbow.
Tankless water heaters don t always need two ventilation pipes even for direct vent units.
The vent pipe exhaust gas during the tankless water heater is operating keep the indoor air safety at all times.
This configuration allows tankless units to fit in smaller spaces.
Direct vent water heaters can use two separate pipes for intake and exhaust but some manufacturers offer concentric venting a single pipe that contains an inner exhaust vent and an outer intake vent.
Apollopex corrugated the 3 4 in.
Direct vent units pull in air from outside the home or building and have two vents one for intake and one for exhaust.
Tankless water heaters don t always need two ventilation pipes even for direct vent units.